N δ  = { n − h w  + 1 + δ   δ ∈ [ h w  − n , h w  − h v  [    n − h v  + 1   δ ∈ [ h w  − h v  , 0 ]    n − h v  + 1 − δ   δ ∈ ] 0 , n − h v  ]             ( 54 )   MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=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@7F57@